IntersectionObserverEntry is not targeting older Operas/Chrome 51 until Chrome 57

[Christian Haller]

https://github.com/Financial-Times/polyfill-library/blob/c7a1de7d89d85da981c6fe1ca4e0f7c24b0cc35b/polyfills/IntersectionObserverEntry/config.toml#L8

Hi, older Chromes/Operas have only the partial support for the IntersectionObserver.

https://caniuse.com/intersectionobserver

the config for IntersectionObserverEntry is only targeting Microsoft Edge.

[Romain Menke]

A fix for this issue was released in v4.8.0

Thank you again for reporting this!